Type-writer.



-P.'\.TE1\ITE D 00T. so, 1906; H. GROSS & G. JK GRIPPITHS.

'TYPE WRITER. APPLICATION FILED Nov. 2o, 1905.

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S si@ f y PATENTBD 00T. so, 1906.. H. GROSS @L G. J. GRIFFITHS.

TYPE WRITER. ABPLIOATION FILED NOV.20. 1905.

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PATBNTBD 00T; so, 1906 TYPE WRITERI Y HQ'GRos's @L G.'J.'GRIPP1THS."

I PPLIUTIQN FILED-NOV. 20,1905.

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i' UNITED ,-sTAilEs' PATENT OF1OE- HARRY ORossANn GEORGE J. ennrnris, OE-WOODsrOOK, iLLlNOIs AssIeNoRs `To THE oLivER TYPEWRITER COMPANY,

` ILLINOIS, A CORPORATION .OF'ILLINOIS TYPE-WRITER.

To all whom, .zlma/y concern."

Be it known thatwe, HARRY ORoss an l GEORGE J. GRIFFITHS, citizens of-t'he United that the following is a `f ull,.clear,'" and exact description thereof,Y reference being had' to the accompanying drawings, and'to the let- .ters of reference-marked thereon, which form a part of this specification.

This invention relates to im rovements in type writingA machines' of t e character shown in theprior patent granted to Thomas Oliver, No. 599,863, dated March l, 1898, havin reference more especiallyto thelconstruction ofthe base-,plate of said machine and 'means for supporting or sustaining the several main operative parts of the machine on said base-plate.

The improvements `herein described and claimedare, however, ap licable tomachines which differ in details o construction from that shownin said Oliver patent. The invention consists in thematters here -inafter described, and pointed out in the ap-,.

-pended claims.

In the accompanying drawings, Figure 1 is a viewin central vertical longitudinal sec- -tion of a typelwriting machineembodying our invention.,- Fi u2 is a p ers ective view of the lbase-plate,lllufstratin t e type-barsupp'ortingstandards secure1 thereto. Fig. 3 1s a plan view from-beneath of the baseplate of the machine and ,parts thereon 'the center oftthe m mounted.4 Fig. 4;,is a detail. sectional view taken on line 4 4 of Fig. 1 y Fi 5 is ay detail plan section'takemo'nhne 5 5 o FigyA. Fig. 6 is a detail cross-sectiontaken on line 6 6 of Fig-3, is a detail sectiontaken on line 717 of-'Fxg- GL i First referring .t0 the eneral features of construction shown in t 'e machine illustrated, A indicates the base-plate bf the maare pi otally connectedjattheir rearl endswiththe rear partlof the base-plate.

C designates the typebars,` which are' mounted nitwo" grou s at-'op osite sidesofangine speicationpf' Letters Patent; Application med november 20,1905; seria No.2sa179. Y

4'which is mounted 1n-a which the carriage an lare mounted.`

Paten-ted oct. so, 1906..

lards D D, which rise from said base-plate near the front of the machine.

B indicates the upright links, which con- -nect the key-levers with the type-bars.

platen or paper-roller, apar-carriage, of

-E indicates the which E vE are the, end p ates, and which is OF CHICAGO,

providedwith a front longitudinal framethe-carriage.

4piece E, on which is formed the rack-bar e of Findicates as awhole the shift-frame, on' l is su said yshiftframe Il-iaving tudinal gu travel the supporting-rollers e e2 of the apported andtravels, ont and rear longi- -bars F F2, on which rest and l perecarriag'e. 'Said shift-frame is provi ed with a 'rearwardly-extending guide-rod or stem F3, which. rests on a supporting-roller J',

mounted in ay standardlJ at the rear end of the base-plate. Said stem is 'also provided with adjustable stop shoulders or nuts f f adapted for contact with' a standard I2-and which is providedwith an open slot, through which the stem Fspasses, and which serves to l limit' the forward and backward movement of the Ishift-frame.

G G indicatefshift-levers throu h which` motion is transmitted to the shiftame by means 'of a horizontal rock-shaft H, having l an, upwardly-extendin crank-arm `Hf, connected with the shift'- anie bymeans of a connecting-bar H".4 Said rock-shaft is o er` ated from the shift-levers G G', as in the Oliver machine.

, K indicates the space-bar of the machine, which extends transversel ithereof beneath 9 LL I the several ke levers an 1s rovided with three forward y-projecting a s Kv. K" K,

connecting it w1th a transverse horizontal rock-shaft K?, which is pivoted to thefor-f; ward part of the base-plate of the machine.

' L indicates the space-key 'of the'machine, which is attached .to ytwo space-key l'evers L L', which are pivotedy at their rear ends -to themachine-frame and are connected with the space-bar arm Kby a cross-bar L2 on .the arms'and a link l, connected bar andsaidarm K.

- The shift-frame isA guided in r,its forward with saidcross# IOO and backward movement and held from endwise movement under the pull ofV the carriage spring by means of. a guide-block actuat', F, whig the under surface of y tion in the base-plate to which the present invention more particularly relates, said baseplate is provided with a horizontal forward portion A, located beneath the forward ends i sof the key-levers, and with a rear elevated horizontal portion A2, which extends forward of the type-bar-supporting standards D D and to which said standards are attached. The forward lower part and the rear elevated part A and A2 are made integral with a depending marginal base-Han e A3 extending entirely around the baseate. The said horizontalrear part A2 of t e base-plate extends over and covers the rear portion of the key-levers At the forward part of said ele;- va'ted portion the latter is connected, at the sides of the| base-plate, I with the forward lower part A between .which is an opening, through which the key-levers extend. Said opening isv continued backwardly'and rearwardly into thev top plate to form a V-shaped opening, affording a space through which rise thejinks B B, connecting the keylevers with the typeebars. From the rear end. of said V-shaped opening extends a narrow slot or opening located beneath the shift-frame of the machine to af- Same.

ford room for the downward extension F7 on said shift-frame and the parts carried thereby. One ed e of said opening constitutes the guide-surface afor the rollers f 2 f 2, here inbefore referred to.

To the forward part of the 'slot or opening in the top plate A2 is applied a cover-plate, indicated as a Whole by I and consisting of. a horizontal top portion and a vertical front portion which is vertlcally slotted to receive the several key-levers which pass through the The cover-plate I is shown as attached to the baselate .by means of. screws i i, inserted throug the end portions of the horizontal part thereof, which .overlap'the adjacent parts of the elevated portion A2 ofl the base-plate at each side of the said opening. The rear edge of said horizontal part of the cover-plate I is shaped to give space for the working parts adjacent theretoand to form two oblique slots, through which pass the links above referred to.

The rear ends of the key-levers are arranged in two groups at opposite sides of the central line of the machine and are pivotally mounted in two blocks M M, Ysecured to the under surface of the. elevated rear part A2 of by nearly upright/walls A4 A,

-hand vertical front wall A4 elevated part A2 and downwardly over the said opening, as

the base-plate and projecting downwardly therefrom. Said blocks M M are vertically slotted to receive the ends of the key-levers, which are rounded, as shown. A pivot-pin M is inserted endwise thrtugheach block and .through the several key-levers. An L- shaped plate M2, Figs. 6 and 7, is secured to each block M by screws m, or otherwise, and covers the bottom and rear faces ol" the block, Said plate M is arranged with its vertical and horizontal parts in position for contact with the rounded ends of the several key-levers and serves to support the same when the pivotpin M is removed. Such plate M2 serves to facilitate the assembling of the parts, because it holds the rear ends of the key-levers in position for insertion of the pivot-pin, which will be inserted through the same after the plate M2 has been attached to the block.'

The two standards J J2, which engage the stem F3 of the shift-frame, are formed in one piece with and rise from a horizontal bar J3, which' extends along and is see ured to the under surface of the elevated part A2 of the frame plate, said standards extending tllirough holes c a2, formed in said framep ate.

The roclnshaft K3 of the space-bar is ivotally supported at its ends in two brac *ets N N, which are attached to the front walls A* .A4 of the frame-plate at either side of the front opening therein.

The shift-levers G G are, in the principal portions thereof, located beneath the said elevated part A2 of the base-plate and at their rear ends are'pivoted to a block O, secured to the under surface of said elevated part. The forward ends of said shift levers extend through a slot or opening formed in the leftof the base-plate and are guided by vertical slots in a guide plate P, secured to the front margin of the and extending outwardly clearly seen in Fig. 2. i The -ide-block F4, whichis attached to the shift-iframe, as hereinbefore stated, extends downwardly through the central opening of the elevated part of the frame and is rovid ed with guide-rollersf2 2, arranged to Bear laterally against the forwardly and rearwardly extending marginal surface a of said elevated part of the base-frame under the lateral pressure exerted on the shift-frame by the action of the carriage-actuating spring. A guide-fiange F5 for the right-hand side of said guide-block F4 is, moreover, formed upon a separate piece or block F, which is secured by screws to the under surface of the elevated part A2 of the base-plate and extends downwardly therefrom, as clearly seen in the drawing Fig. 4. Supports for the pivots at the rear or nner ends l,of the space-key levers are formed loo IIO

- by means of two dependingarmsQ Q, lfo'rn'ied i which the rear horizontal 'saines t on altransverse cross-bar block F". y

An important advantage ained by the construction of the frame-p ate here described as compared with that of the t ewriter shown in the Oliver patent herein-be- ,attached to the fore' referred to, is that by providing the baseplate with an elevatedrear part extending above the level of andover the rear portions of the key-levers and attachingthe standards DD,whichsu port thet e-bars, to said elevated part of tlle base -'p ate said standards are made shorter, and therefore much stiffer or 1more rigid, and the pivotal supports for the type-bars sustained by saids'tandards are thereby more strongly and rigidly held in position, and vibratory rmovement thereof tending to interfere with the accuracy in printingis thereby lessened.

' 1 The construction in the art thereof extends over the rear part of t et pe-barszband mechanism associated therewith has the advantage of protecting such parts from dust or dirt and from mechanical injury. v Moreover, the elevated rearpart of the base-plate made as described affords stronger 'and more rigid support for the key-levers, which latter are located only a short dis'tance. beneath saidplate, thereby avoiding the necessity of using relatively long standards o n the base-plate to sustain'the key-lever pivots, as in the prior Oliver machine.'

The construction describedl also has the advantage that the 4rearwardlyfextending stem F3, 'on the shift-frame is only a short distance above the elevated rear part of. the' plate, so

d"that the standard J 2, which receives'the blow or impact of ythe stop-nuts "on said stemv by Iwhich the movement of the shiftframe in yeither directicgh is limited, is made .ver much shorter,- and v5[lfie'refore more firm an rigid,

- .5 'eXte'ndim marginal flange wider at its rear `V and an openln higher elevatiol than in thefca'se of the c'orr ponding Stande ard of the Oliver type-writ r as heretofore constructed. v We claim "as our inventin 1. A base-plate' for a-typefm'itin'g machine having a lower, horizontal front part, a.

'gher, horizontal rear part,. a downwardly'.-

.than at hb front part to correspond with the of the rearv horizontal part, between its4 lower/ front and .higher'rear horizontal parts for passage of the key-levers of the machine. 2. A type-writing machine embracl-ngsubi stantially horizontal key-levers, anda basei fp late provided with a downwardly-di'redtved 6o ange' extending around its margidand haging a lower, horizontal front part extendi g y beneath the forward ends of thekey-levers,

and a higher, horizontal rear part extending over the rear portionof said ke 'levers.

3.v A type-writing-rnachine ame embrac base plate by 1overgthe reairep'ortionil of the 'a-flanged base-plate having a lower, horizontal, front part and al higher, horizontal 4to and rising from the forward portion of the higher, rearV art ofthe base-plate at opposite sides of t e center of thesame.

. rear part, and two frame-standards attached 4.- A type writing machine', embracing horizontally-arranged key-levers, type-bars arranged in two groups above the key-ler vers, supporting-frames for the type-bars, a flanged base-plate having a lower, horizontal, front portion beneath theforward ends of the key-levers,l and a higher, horizontal rear por-V tion extending lover the rear portions of the key-levers, and frame-standards for support- 'ing said typebaifsupporting frames, said ,framestandards being attached to and rising froln'the said higherrear portionofthe baselevers, supporting-frames or said type-bars, a platen, a paper-carriage and a shift-frame supporting the paper-carriage, of a flanged base-platevhaving". a lower horizontal front portion located beneath the forward parts of the key-levers and 'a higher horizontal rear pqtion, located over the rear prtionsof theV 2 e'y-leversl and below the shift-frame, and standards attached to and, "rising from the said higher rear portion of the base-plate for supporting the said typeebar frames.

rangedl key-levers, of a flanged base-plate having a lower, horizontal, front portion'beneath the forward portions of thekeyLlevers and a higher, horizontal, rear art extendin over the rear portlons of sald ey-levers, an

blocks affording pivotalsnpportfor the said key-levers, said b ocks being 'attached to and depending from the l'lower' surfe| ce o ffthe said higherfhorizontalrear part Sad base-y plate. l*

v8. T he combination with horizontally-ar'- ranged ke -levers, and "a horizontally-'movable shiftrame provided with a rearwardly-- .extending guide-rod or stem, of aibase-plate having a lowehorlzontal, front Jortion behigher, horizotal rear lpartl extendin n'eath the forward olytions ofthe eyflevers,

and

standards for guiding the said stem and llimiting the movement fof the` shift-frame, said" standards .being forn'ed on a'horizontal conbars arranged in two grou s above the ey'- 7,.- The combinationwitl horizontally-ar- IIS ev'ersyan nesting-bar which is secured to the. under surface of the higher portion of the base-plate and rising from said bar through apertures in said base-plate. h

9. lThe combination with horizontally-arranged key-levers, of a flan ed base-plate having a lower, horizontal, ont part beneath the forward portions ofthe key-levers and a higher horizontal rear part extending over the rear'- portions of the key-levers, said base-plate having between the lower and higher arts thereof an opening for the passage oip the key-levers, which is extended rearwardly into the higher horizontal part of the plate anda separate ooverplate attached to the base-plate over said opening and provided with a vertical de ending flange which is slotted to receive the A ey-levers.

10. The combination with horizontally-arranged key-levers and a hoi-immi'ally-inovable shift-frame above the saine, ol a flanged 'baseplate having a horizontal pa 1': whii-h ex- 

